Thread: Cetane...
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Old 09-28-2019, 01:20 PM   #3 (permalink)
cRiPpLe_rOoStEr
It's all about Diesel
 
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Originally Posted by me and my metro View Post
I would imagine that the B20 Diesel kills mileage and performance like the E10-15 does for the gasoline powered rigs.
Mileage? Maybe. Performance? Not so noticeably affected. But anyway, ethanol doesn't decrease performance compared to gasoline, even though the mileage is affected.

Back to topic: nowadays that many newer downsized Diesel engines are more rev-happy than their predecessors, not to mention the increased presence of direct injection on light-duty vehicles in the last 20 years, would already be a matter of concern regarding a lower cetane rating. The slight decrease on the compression ratio, needed for some engines to comply with NOx regulations, is also relevant not just due to the NOx, since a more accurate combustion leads to a lower amount of particulate matter which in the end would require more frequent DPF regen cycles.
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